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Saidj M, Djafri A, Rahmani R, Belkafouf NEH, Boukabcha N, Djafri A, Chouaih A. Molecular Structure, Experimental and Theoretical Vibrational Spectroscopy, (HOMO-LUMO, NBO) Investigation, (RDG, AIM) Analysis, (MEP, NLO) Study and Molecular Docking of Ethyl-2-{[4-Ethyl-5-(Quinolin-8-yloxyMethyl)-4H-1,2,4-Triazol-3-yl] Sulfanyl} Acetate. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2039238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Merzouk Saidj
- Process Engineering Department, Laboratory of Technology and Solid Properties, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria
| | - Ahmed Djafri
- Process Engineering Department, Laboratory of Technology and Solid Properties, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria
- Organic Synthesis Division, Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques (CRAPC), Tipaza, Algérie
| | - Rachida Rahmani
- Process Engineering Department, Laboratory of Technology and Solid Properties, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria
- Department of Process Engineering, Faculty of Sciences and Technology, Ahmed Zabana University of Relizane, Relizane, Algeria
| | - Nour El Houda Belkafouf
- Process Engineering Department, Laboratory of Technology and Solid Properties, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria
| | - Nourdine Boukabcha
- Process Engineering Department, Laboratory of Technology and Solid Properties, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria
- Chemistry Department, Faculty of Exact Sciences and Informatic, Hassiba Benbouali University, Chlef, Algeria
| | - Ayada Djafri
- Laboratoire de Synthèse Organique Appliquées (LSOA), Faculté Des Sciences Exactes et Appliquées, Département de Chimie, Université Oran-1, Algérie
| | - Abdelkader Chouaih
- Process Engineering Department, Laboratory of Technology and Solid Properties, Faculty of Sciences and Technology, Abdelhamid Ibn Badis University, Mostaganem, Algeria
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El-Mansy M, Ibrahim M, Suvitha A, Abdelsalam H, Osman W. Boosted electronic, optical, and NLO responses of homo P-nanoclusters via conducting polymeric substituents. COMPUT THEOR CHEM 2021. [DOI: 10.1016/j.comptc.2021.113343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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The electronic and optical absorption properties of pristine, homo and hetero Bi-nanoclusters. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Käppler A, Fischer M, Scholz-Böttcher BM, Oberbeckmann S, Labrenz M, Fischer D, Eichhorn KJ, Voit B. Comparison of μ-ATR-FTIR spectroscopy and py-GCMS as identification tools for microplastic particles and fibers isolated from river sediments. Anal Bioanal Chem 2018; 410:5313-5327. [PMID: 29909455 DOI: 10.1007/s00216-018-1185-5] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/16/2018] [Accepted: 06/05/2018] [Indexed: 12/29/2022]
Abstract
In recent years, many studies on the analysis of microplastics (MP) in environmental samples have been published. These studies are hardly comparable due to different sampling, sample preparation, as well as identification and quantification techniques. Here, MP identification is one of the crucial pitfalls. Visual identification approaches using morphological criteria alone often lead to significant errors, being especially true for MP fibers. Reliable, chemical structure-based identification methods are indispensable. In this context, the frequently used vibrational spectroscopic techniques but also thermoanalytical methods are established. However, no critical comparison of these fundamentally different approaches has ever been carried out with regard to analyzing MP in environmental samples. In this blind study, we investigated 27 single MP particles and fibers of unknown material isolated from river sediments. Successively micro-attenuated total reflection Fourier transform infrared spectroscopy (μ-ATR-FTIR) and pyrolysis gas chromatography-mass spectrometry (py-GCMS) in combination with thermochemolysis were applied. Both methods differentiated between plastic vs. non-plastic in the same way in 26 cases, with 19 particles and fibers (22 after re-evaluation) identified as the same polymer type. To illustrate the different approaches and emphasize the complementarity of their information content, we exemplarily provide a detailed comparison of four particles and three fibers and a critical discussion of advantages and disadvantages of both methods.
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Affiliation(s)
- Andrea Käppler
- Leibniz-Institut für Polymerforschung Dresden e.V. (IPF), Hohe Str. 6, 01069, Dresden, Germany. .,Organische Chemie der Polymere, Technische Universität Dresden, 01062, Dresden, Germany.
| | - Marten Fischer
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University of Oldenburg, P.O. Box 2503, 26111, Oldenburg, Germany.
| | - Barbara M Scholz-Böttcher
- Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University of Oldenburg, P.O. Box 2503, 26111, Oldenburg, Germany
| | - Sonja Oberbeckmann
- Leibniz Institute for Baltic Sea Research Warnemünde (IOW), Seestraße 15, 18119, Rostock, Germany
| | - Matthias Labrenz
- Leibniz Institute for Baltic Sea Research Warnemünde (IOW), Seestraße 15, 18119, Rostock, Germany
| | - Dieter Fischer
- Leibniz-Institut für Polymerforschung Dresden e.V. (IPF), Hohe Str. 6, 01069, Dresden, Germany
| | - Klaus-Jochen Eichhorn
- Leibniz-Institut für Polymerforschung Dresden e.V. (IPF), Hohe Str. 6, 01069, Dresden, Germany
| | - Brigitte Voit
- Leibniz-Institut für Polymerforschung Dresden e.V. (IPF), Hohe Str. 6, 01069, Dresden, Germany.,Organische Chemie der Polymere, Technische Universität Dresden, 01062, Dresden, Germany
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El-Mansy MAM. Quantum chemical studies on structural, vibrational, nonlinear optical properties and chemical reactivity of indigo carmine dye. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:284-290. [PMID: 28456086 DOI: 10.1016/j.saa.2017.04.047] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 03/25/2017] [Accepted: 04/18/2017] [Indexed: 06/07/2023]
Abstract
Structural and vibrational spectroscopic studies were performed on indigo carmine (IC) isomers using FT-IR spectral analysis along with DFT/B3LYP method utilizing Gaussian 09 software. GaussView 5 program has been employed to perform a detailed interpretation of vibrational spectra. Simulation of infrared spectra has led to an excellent overall agreement with the observed spectral patterns. Mulliken population analyses on atomic charges, MEP, HOMO-LUMO, NLO, first order hyperpolarizability and thermodynamic properties have been examined by (DFT/B3LYP) method with the SDD basis set level. Density of state spectra (DOS) were calculated using GaussSum 3 at the same level of theory. Molecular modeling approved that DOS Spectra are the most significant tools for differentiating between two IC isomers so far. Moreover, The IC isomers (cis-isomer) have shown an extended applicability for manufacturing both NLO and photovoltaic devices such as solar cells.
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Affiliation(s)
- M A M El-Mansy
- Molecular Modeling Simulation Group, Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
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El-Mansy MAM, El-Bana MS, Fouad SS. On the spectroscopic analyses of 3-Hydroxy-1-Phenyl-Pyridazin-6(2H)one (HPHP): A comparative experimental and computational study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 176:99-105. [PMID: 28086166 DOI: 10.1016/j.saa.2016.12.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 12/21/2016] [Accepted: 12/30/2016] [Indexed: 06/06/2023]
Abstract
We have systematically calculated various physical characteristics such as optimized molecular structural parameters, vibrational frequencies, HOMO-LUMO energy gap, total dipole moment and thermochemical parameters: nuclear repulsion energy, ionization energy, electron affinity, global hardness, electronic chemical potential, global electrophilicity index and finally softness (ζ) using DFT/B3LYP utilizing 6-311G(d,p) basis set for 3-Hydroxy-1-Phenyl-Pyridazin-6(2H)one (HPHP). Also, HPHP nonlinear optical (NLO) properties have been checked by DFT/B3LYP utilizing 6-311G(d,p) basis set. In addition, we have investigated the influence of exposure to UV radiation on HPHP physical properties at the same level of theory. Our results show that HPHP possesses a dipole moment (2.68Debye) and HOMO-LUMO energy gap of 3.99eV that emphasize its high applicability for manufacturing photovoltaic devices such as solar cells. After exposure to UV radiation, the HPHP dipole moment has been lowered from 2.68 to 2.3Debye due to UV radiation. Moreover, a double spin in HPHP has been observed, as electrons are aligned according to their spin state. Electrons (spin ↑) and (spin ↓) are aligned in alpha and beta levels with energy gaps 3.82 and 3.17eV, respectively. This anomalous behavior may be justified by considering that HPHP undergoes anomalous Zeeman-like effect. The presence of this phenomenon in HPHP introduces it as a modern organic semiconductor which has high applicability to be used in modern spintronics.
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Affiliation(s)
- M A M El-Mansy
- Molecular Modeling Simulation Group, Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - M S El-Bana
- Nano-Science & Semiconductor Laboratories, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
| | - S S Fouad
- Nano-Science & Semiconductor Laboratories, Department of Physics, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
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Okasha A, Gomaa F, Elhaes H, Morsy M, El-Khodary S, Fakhry A, Ibrahim M. Spectroscopic analyses of the photocatalytic behavior of nano titanium dioxide. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 136 Pt B:504-509. [PMID: 25448951 DOI: 10.1016/j.saa.2014.09.063] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Revised: 09/11/2014] [Accepted: 09/18/2014] [Indexed: 06/04/2023]
Abstract
Nano titanium dioxide TiO2 was synthesized using hydrolysis method then subjected to several characterizations. XRD revealed that the as-prepared sample is pure anatase phase and after calcinations at 500°C for 3 h the crystallinity has increased. The crystallite size calculated by Debye-Scherrer's formula is 8 nm. The HRTEM image shows an average size of about 9 nm, which is close to the XRD calculation from Scherrer's formula. PM3 semiempirical quantum mechanical calculations were conducted to present the electronic as well as thermal properties for TiO2. FTIR spectra between 800 and 400 cm(-1) are the verification for the lattice vibrations of anatase TiO2. The photo catalytic degradation of methylene blue (MB) was tested by the prepared nano TiO2. Results indicate that, the maximum degradation efficiency reached 94.4% after 120 min of UV irradiation. This increase in the degradation efficiency of TiO2 could be attributed to the reduction in particle size that enhanced the crystallinity as a result of heat treatment.
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Affiliation(s)
- Aly Okasha
- Spectroscopy Department, National Research Centre, 12311 Dokki, Cairo, Egypt
| | - Fathia Gomaa
- Chemistry Department, Faculty of Women for Arts, Science and Education, Ain Shams University, 11757 Cairo, Egypt
| | - Hanan Elhaes
- Physics Department, Faculty of Women for Arts, Science and Education, Ain Shams University, 11757 Cairo, Egypt
| | - Mohamed Morsy
- Building Physics and Environment Institute, Housing & Building National Research Center (HBRC), 12311 Dokki, Cairo, Egypt
| | - Sherif El-Khodary
- Building Physics and Environment Institute, Housing & Building National Research Center (HBRC), 12311 Dokki, Cairo, Egypt
| | - Ahmed Fakhry
- Spectroscopy Department, National Research Centre, 12311 Dokki, Cairo, Egypt
| | - Medhat Ibrahim
- Spectroscopy Department, National Research Centre, 12311 Dokki, Cairo, Egypt.
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El-Mansy MAM, Ismail MM. On the spectroscopic analyses of 3-(4-Hydroxy-1-methyl-2-oxo-1,2-dihydro-quinolin-3-yl)-2-nitro-3-oxo-propionic acid (HMQNP). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:704-709. [PMID: 25129625 DOI: 10.1016/j.saa.2014.07.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 07/08/2014] [Accepted: 07/18/2014] [Indexed: 06/03/2023]
Abstract
In the present work, a combined experimental and theoretical study on molecular structure and vibrational frequencies of HMQNP were reported. The FT-IR spectrum of HMQNP is recorded in the solid phase. The equilibrium geometries, harmonic vibrational frequencies, thermo-chemical parameters, total dipole moment, nuclear repulsion energy and HOMO-LUMO energies are calculated by DFT/B3LYP utilizing 6-311G(d,p) basis set. Results showed that HMQNP possesses a high dipole moment value of 9.3 Debye. HMQNP spin is doublet state which enhances frontier molecular orbitals to split into alpha (spin ↑) and beta (spin ↓) molecular orbitals with two different energy gaps 4.2 and 2.7 eV, respectively. HMQNP is highly recommended to be a more promising structure for many applications in optoelectronic devices such as solar cells.
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Affiliation(s)
- M A M El-Mansy
- Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - M M Ismail
- Chemistry Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
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El-Mansy MAM, El-Nahass MM. On the spectroscopic analyses of Perylene-66. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 130:568-573. [PMID: 24813287 DOI: 10.1016/j.saa.2014.03.118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 03/10/2014] [Accepted: 03/29/2014] [Indexed: 06/03/2023]
Abstract
In the present work, a combined experimental and theoretical study on molecular structure and vibrational frequencies of Perylene-66 were reported. The FT-IR spectrum of Perylene-66 is recorded in the solid phase. The equilibrium geometries, harmonic vibrational frequencies, thermo-chemical parameters, total dipole moment and HOMO-LUMO energies are calculated by DFT/B3LYP utilizing 6-311G(d,p) basis set. Results showed that Perylene-66 is highly recommended to be a promising structure for many applications in optoelectronic devices due to its high calculated dipole moment value (3.6 Debye) and lower HOMO-LUMO energy gap of 3.2 eV.
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Affiliation(s)
- M A M El-Mansy
- Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - M M El-Nahass
- Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
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El-Mansy MAM, Yahia IS. Spectroscopic notes of Methyl Red (MR) dye. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 130:59-63. [PMID: 24762574 DOI: 10.1016/j.saa.2014.03.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Revised: 03/22/2014] [Accepted: 03/29/2014] [Indexed: 06/03/2023]
Abstract
In the present work, a combined experimental and theoretical study on molecular structure and vibrational frequencies of MR were reported. The FT-IR spectrum of MR is recorded in the solid phase. The equilibrium geometries, harmonic vibrational frequencies, thermo-chemical parameters, total dipole moment and HOMO-LUMO energies are calculated by DFT/B3LYP utilizing 6-311G(d,p) basis set. Results showed that MR is highly recommended to be a promising structure for many applications in optoelectronic devices due to its high calculated dipole moment value (7.2 Debye) and lower HOMO-LUMO energy gap of 3.5 eV.
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Affiliation(s)
- M A M El-Mansy
- Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt.
| | - I S Yahia
- Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt; Physics Department, Faculty of Science, King Khalid University, Abha, Saudi Arabia
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